Compare 990989 vs 991001
| Property | 990989 | 991001 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 3 |
| Total factors | 1 | 3 |
| Prime factorization | 9909891 | 111 × 231 × 39171 |
| Prime factorization | 990989 | 11 × 23 × 3917 |
| Divisors count | 2 | 8 |
| Divisors | 1, 990989 | 1, 11, 23, 253, 3917, 43087, 90091, 991001 |
| Number of properties | 4 | 0 |
| Chen primes | 29726th | |
| Emirps | 10968th | |
| Isolated primes | 61633rd | |
| Primes | 77848th | |
| Roman numberals | ||
| Base 2 | 111100011111000011012 | 111100011111000110012 |
| Base 3 | 12121001010223 | 12121001012023 |
| Base 4 | 33013300314 | 33013301214 |
| Base 5 | 2232024245 | 2232030015 |
| Base 6 | 331235256 | 331235456 |
| Base 7 | 112651167 | 112651347 |
| Base 8 | 36174158 | 36174318 |
| Base 9 | 17703389 | 17703529 |
| Base 10 | 99098910 | 99100110 |
| Base 11 | 6175aa11 | 61761011 |
| Base 12 | 3b95a512 | 3b95b512 |
| Base 13 | 2890ac13 | 2890bb13 |
| Base 14 | 1bb20d14 | 1bb21b14 |
| Base 15 | 14895e15 | 14896b15 |
| Base 16 | f1f0d16 | f1f1916 |